18812586

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 23765334

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 71, 78, 79, 86, 129, 142, 158, 213, 237, 258, 426, 474, 559, 923, 1027, 1118, 1677, 1846, 2054, 2769, 3053, 3081, 3354, 3397, 5538, 5609, 6106, 6162, 6794, 9159, 10191, 11218, 16827, 18318, 20382, 33654, 39689, 44161, 72917, 79378, 88322, 119067, 132483, 145834, 218751, 238134, 241187, 264966, 437502, 482374, 723561, 1447122, 3135431, 6270862, 9406293, 18812586]

約数ペア:

[(1, 18812586), (2, 9406293), (3, 6270862), (6, 3135431), (13, 1447122), (26, 723561), (39, 482374), (43, 437502), (71, 264966), (78, 241187), (79, 238134), (86, 218751), (129, 145834), (142, 132483), (158, 119067), (213, 88322), (237, 79378), (258, 72917), (426, 44161), (474, 39689), (559, 33654), (923, 20382), (1027, 18318), (1118, 16827), (1677, 11218), (1846, 10191), (2054, 9159), (2769, 6794), (3053, 6162), (3081, 6106), (3354, 5609), (3397, 5538)]